Assembly structure and liquid storage bottle of hand wash liquid soap dispenser

ABSTRACT

An assembly structure and a liquid storage bottle of a hand wash liquid soap dispenser are disclosed. The assembly structure of a hand wash liquid soap dispenser includes a main body casing, a liquid storage bottle, and an external snapping head snap-fitted on a bottle mouth of the liquid storage bottle. A plurality of protruded flexible snaps are arranged at intervals on an outer periphery of an upper end of the external snapping head. A recessed groove engageable with the outer periphery of the external snapping head is provided on a bottom part of the main body casing, and a plurality of first snaps corresponding to the flexible snaps are provided on an inner wall of the recessed groove. A suction nozzle extending downward from the recessed groove is disposed on one side of the recessed groove, and a recessed hole is provided on the external snapping head.

CROSS REFERENCE TO RELATED APPLICATION

This application claims priority of Chinese patent application No.202020276140.2 filed on Mar. 9, 2020. The contents of the applicationsare incorporated herein by reference in their entireties.

TECHNICAL FIELD

The present application relates to the technical field of personal care,particularly to an assembly structure and a liquid storage bottle of ahand wash liquid soap dispenser.

BACKGROUND TECHNOLOGY

Hand wash liquid soap is a kind of personal care cleaning product thatis often used in daily life, usually placed in the kitchen, toilets etc.Hand wash liquid soap is generally stored in a container, and isdispensed out of the container by pressing a pressing means provided onthe top of the container. In order to meet the needs of users ofconvenience and avoiding cross-contamination caused by contact, someautomatic hand wash liquid soap dispensers have emerged, which use anelectric main body to suck up the hand wash liquid soap in the storagebottle and achieve the purpose of delivery. This saves the manualpressing process. However, the connection between the main body and thestorage bottle of the automatic hand wash liquid soap dispenser isbasically a screw or thread connection in prior art. It needs to berotated for multiple times, or to an aligned position to be engaged whenreplacing a liquid storage bottle. This results in complex assemblysteps, hence increases the user's workload and reduces the user'scomfort.

SUMMARY OF THE APPLICATION

An objective of the present application is to provide an assemblystructure of a hand wash liquid soap dispenser which overcomes thedefects in the prior art. An external snapping head is provided toconnect a liquid storage bottle and a main body casing, thereby reducingthe assembly steps of the two and simplifying the overall structure.

In order to solve the above technical problems, the present applicationprovides an assembly structure of a hand wash liquid soap dispenser,which includes a main body casing and a liquid storage bottle, andfurther includes an external snapping head snap-fitted on a bottle mouthof the liquid storage bottle. A plurality of protruded flexible snapsare arranged at intervals on an outer periphery of an upper end of theexternal snapping head. A recessed groove to be engaged with the outerperiphery of the external snapping head is provided on a bottom part ofthe main body casing, and a plurality of first snaps or snap groovescorresponding to the flexible snaps are provided on an inner wall of therecessed groove. A suction nozzle extending downward and protrudingbeyond the recessed groove is disposed on one side of the recessedgroove, and a recessed hole for the suction nozzle to be inserted in andsealed is provided on the external snapping head. A through-holecommunicating with an inside of the liquid storage bottle is provided ona bottom part of the recessed hole.

Further, a positioning recess is provided in a central part of a top endof the external snapping head, and a boss which extends downward and isto be inserted into the positioning recess is provided in a central partof the recessed groove. The suction nozzle is disposed on one side ofthe boss and is protruded downward and beyond a lower end of the boss.The recessed hole is located on one side of a bottom part of thepositioning recess.

Further, two vertical guiding columns are provided on an inner wall ofthe positioning recess and respectively located at two sides of therecessed hole. One side of the boss is recessed and formed with guidinggrooves which cooperate with the guiding columns, and the suction nozzleis located in the middle of the guiding grooves.

Further, an air aperture in communication with an inside of the liquidstorage bottle is provided at one side of the recessed hole on thebottom part of the positioning recess. Outer sides of the two guidingcolumns are respectively in abutment with both sides of the guidinggrooves. An air flow channel connecting external air and the airaperture is provided between the guiding columns and the suction nozzle.

Further, a snapping edge protruding in a radial direction is provided onan outer side of an upper end of the bottle mouth of the liquid storagebottle. A cap-shaped portion sleeved on an outer periphery of the bottlemouth of the liquid storage bottle is formed on the outer periphery ofthe upper end of the external snapping head. An inner side of thecap-shaped portion is provided with a plurality of protruded secondsnaps distributed at intervals in an annular array and snap-fitted to alower end surface of the snapping edge.

Further, the top end of the external snapping head is provided witharc-shaped holes running through in an up and down direction atpositions corresponding to the second snaps.

Further, at least one positioning protrusion projecting radiallyoutwards from the snapping edge is provided on the outer periphery ofthe bottle mouth of the liquid storage bottle, and a U-shaped bayonetfor the positioning protrusion to fit in is provided on a lower end ofthe cap-shaped portion.

Further, the assembly structure of the hand wash liquid soap dispenserincludes a bottle cap that is covered on the outer periphery of theexternal snapping head for sealing, and a rubber plug disposed in thepositioning recess for sealing the recessed hole and the air aperture. Aplurality of protruded rotation stoppers for screwing the flexible snapsin are provided on an inner side of the bottle cap, and a receivinggroove for receiving the flexible snap is provided in the rotationstopper. One side of the receiving groove is an opening into which theflexible snap is screwed, and a protruded arc-shaped limiter is providedat the opening. A lower end of the rotation stopper on a sidecorresponding to the opening is provided with an outwardly incliningguiding inclined edge. The other side of the receiving groove has a ribfor stopping the flexible snap. A lower end of the rubber plug isprovided with two plug pillars which are protruded and inserted into therecessed hole and the air aperture respectively.

A liquid storage bottle is further provided, which includes a bottlebody, an external snapping head snapped to a bottle mouth of the bottlebody, and a bottle cap covered onto an outer periphery of the externalsnapping head. A plurality of protruded flexible snaps are provided atintervals on an outer periphery of an upper end of the external snappinghead, and a plurality of protruded rotation stoppers for screwing theflexible snaps into are provided on an inner side of the bottle cap. Apositioning recess is provided in a central part of a top end of theexternal snapping head, and one side of the positioning recess isprovided with a recessed hole and an air aperture that communicate withan inside and an outside of the bottle body. The positioning recess isalso provided with a rubber plug for sealing the recessed hole and theair aperture.

Further, a receiving groove for receiving the flexible snap is providedin the rotation stopper. One side of the receiving groove is an openinginto which the flexible snap is screwed, and a protruded arc-shapedlimiter is provided at the opening. A lower end of the rotation stopperon a side corresponding to the opening is provided with an outwardlyinclining guiding inclined edge. The other side of the receiving groovehas a rib for stopping the flexible snap. A lower end of the rubber plugis provided with two plug pillars which are inserted into the recessedhole and the air aperture respectively.

Further, a snapping edge protruding in a radial direction is provided onan outer side of an upper end of the bottle mouth of the liquid storagebottle. A cap-shaped portion is formed on the outer periphery of theupper end of the external snapping head, which is sleeved on an outerperiphery of the bottle mouth of the liquid storage bottle. An innerside of the cap-shaped portion is provided with a plurality of protrudedsecond snaps distributed at intervals in an annular array andsnap-fitted to a lower end surface of the snapping edge.

Further, a top end of the external snapping head is provided witharc-shaped holes running through in an up and down direction atpositions corresponding to the second snaps.

Further, at least one positioning protrusion projecting radiallyoutwards from the snapping edge is provided on the outer periphery ofthe bottle mouth of the liquid storage bottle, and a lower end of thecap-shaped portion is provided with a U-shaped bayonet for thepositioning protrusion to fit in.

The present application has following advantageous effects:

The present application realizes a snap connection between the liquidstorage bottle and the main body casing through the external snappinghead snap-fitted on the bottle mouth and the snaps provided on theexternal snapping head, such that the main body casing can be presseddownward and snap-fitted to the external snapping head. The entireassembly process is simple and effortless, with less assembly steps ofthe two and a simple overall structure. Compared to the suction nozzlewhich is located in the center at the lower end of the main body casingin the existing technology, the present application provides a suctionnozzle located on one side of the recessed groove at the lower end ofthe main body casing, and a recessed hole matched with the suctionnozzle on the external snapping head, in order to avoid self-rotationafter the main body casing is assembled, so that the rotation may bestopped by the cooperation of the suction nozzle and the recessed hole.The present application has the characteristics of a simple structureand easy and quick assembly.

Additional aspects and advantages of the present application will bepartially shown in the following description, which will become obviousfrom the following description, or be understood through the practice ofthe present application.

BRIEF DESCRIPTION OF THE DRAWINGS

The drawings described here are used to provide a further understandingof the present application, form part of this application, and not to beconstrued as an undue limitation of the present invention. In thedrawings:

FIG. 1 is a schematic diagram of the assembly structure of the hand washliquid soap dispenser in Embodiment 1;

FIG. 2 is an exploded view of the assembly structure of the hand washliquid soap dispenser in Embodiment 1;

FIG. 3 is a schematic diagram of the main body casing in Embodiment 1;

FIG. 4 is a top view of the external snapping head in Embodiments 1 and2;

FIG. 5 is a cross-sectional view of the external snapping head inEmbodiments 1 and 2;

FIG. 6 is a schematic diagram of the external snapping head inEmbodiments 1 and 2;

FIG. 7 is a schematic diagram of the bottle body of the liquid storagebottle in Embodiments 1 and 2;

FIG. 8 is a schematic diagram of the liquid storage bottle inEmbodiments 2;

FIG. 9 is an exploded view of the liquid storage bottle in Embodiments2;

FIG. 10 is a schematic diagram of the bottle cap in the embodiments;

FIG. 11 is a schematic diagram of the rubber plug in the embodiments;and

FIG. 12 is a schematic diagram of the rubber plug and the externalsnapping head after being connected in the embodiments.

DESCRIPTION OF THE EMBODIMENTS

In order to more fully understand the technical content of the presentapplication, the present application will be further described andexplained in conjunction with the drawings and specific embodiments. Itshould be noted that descriptions such as “first” and “second” in thecontext are used to distinguish different parts and the like, and do notrepresent the order, nor limit the “first” and “second” as differenttypes.

The technical proposals in the embodiments of the present applicationwill be described clearly and completely in conjunction with thedrawings in the embodiments of the present application. Obviously, thedescribed embodiments are merely part of embodiments of the presentinvention, rather than all of the embodiments. Based on the embodimentsof the present application, all other embodiments obtained by thoseskilled in the art without creative work fall within the scope ofprotection of the present application.

Embodiment 1

As shown in FIGS. 1-7 , the assembly structure of the hand wash liquidsoap dispenser of the present application includes a main body casing 1and a liquid storage bottle 2, and further includes an external snappinghead 3 snap-fitted on a bottle mouth 21 of the liquid storage bottle 2.Two protruded flexible snaps 31 are arranged symmetrically on an outerperiphery of an upper end of the external snapping head 3. A recessedgroove 11 to be engaged with the outer periphery of the externalsnapping head 3 is provided on a bottom part of the main body casing 1,and two first snaps 12 or snap grooves corresponding to the flexiblesnaps 31 are provided on an inner wall of the recessed groove 11. Asuction nozzle 13 extending downward and protruding beyond the recessedgroove 11 is disposed on one side of the recessed groove 11, and arecessed hole 32 for the suction nozzle 13 to be inserted in and sealedis provided on the external snapping head 3. The recessed hole 32 andthe suction nozzle 13 are sealed by interference fit, and a through-hole321 communicating with an inside of the liquid storage bottle 2 isprovided on a bottom part of the recessed hole 32. In the practicalapplication, a suction tube is sleeved on the suction nozzle, and alower end of the suction tube passes through the through-hole 321 andextends downward into the bottom of the liquid storage bottle, drawingout the liquid in the liquid storage bottle. As mentioned above, thesnap connection between the liquid storage bottle and the main bodycasing is realized through the external snapping head snap-fitted on thebottle mouth and the snaps provided on the external snapping head, suchthat the assembly may be completed by pressing and snap-fitting the mainbody casing to the external snapping head. The entire assembly processis simple and effortless, with less assembly steps of the two and asimple overall structure. Compared to the suction nozzle which islocated in the center at the lower end of the main body casing in theexisting technology, the present application provides a suction nozzlelocated on one side of the recessed groove at the lower end of the mainbody casing, and a recessed hole matched with the suction nozzle on theexternal snapping head, in order to avoid self-rotation after the mainbody casing is assembled, so that the rotation may be stopped by thecooperation of the suction nozzle and the recessed hole.

In the present embodiment, a positioning recess 33 which is recesseddownward into the bottle mouth of the liquid storage bottle is providedin a central part of a top end of the external snapping head 3, and aboss 14 which extends downward into the positioning recess 33 isprovided in a central part of the recessed groove 11. The suction nozzle13 is disposed on one side of the boss 14 and is protruded downward andbeyond a lower end of the boss 14. The recessed hole 32 is located onone side of a bottom part of the positioning recess 33. Therefore, themain body casing and the external snapping head can be easily assembledthrough the cooperation of the boss and the positioning recess. In orderto further achieve the precise alignment and the quick assembly of thesuction nozzle and the recessed hole, two vertical guiding columns 331that are protruded are provided on an inner wall of the positioningrecess 33, and the two guiding columns 331 are symmetrically located attwo sides of the recessed hole 32. One side of the boss 14 is recessedand formed with guiding grooves 141 which can accommodate and cooperatewith the two guiding columns 331, and outer sides of the two guidingcolumns are respectively in abutment with two sides of the guidinggrooves. The suction nozzle 13 is located in the middle of the guidinggrooves 141, therefore, when the boss is to be inserted into thepositioning recess, the guiding columns have to be aligned with theguiding grooves before being guided downward, finally the suction nozzlein the middle of the guiding grooves is inserted into the recessed holebetween the two guiding columns, using the cooperation of the boss andthe positioning recess to achieve guiding and positioning. Furthermore,in order to facilitate the insertion of the boss into the positioningrecess, the corners of the guiding columns are designed as transitioncurved surfaces, and the corners of the boss contacting the transitioncurved surfaces of the guiding columns are also designed as curvedsurfaces in coordination therewith, so that the smoothness between twocurved surfaces may facilitate the assembly between the boss and thepositioning recess.

Specifically, an air aperture 34 in communication with the inside of theliquid storage bottle 2 is provided on the bottom part of thepositioning recess 33. Gas flows into the bottle through the airaperture when drawing liquid out of the bottle. The air aperture 34 islocated at one side of the recessed hole 32. After the boss is fittedinto the positioning recess, a gap (not shown) exists between theguiding columns 331 and the suction nozzle 13 acts as an air flowchannel connecting the external air and the air aperture 34.

Specifically, a snapping edge 211 protruding in a radial direction isprovided on an outer side of an upper end of the bottle mouth 21 of theliquid storage bottle 2. A cap-shaped portion 35 is formed on the outerperiphery of the upper end of the external snapping head 3, which issleeved on an outer periphery of the bottle mouth 21 of the liquidstorage bottle 2. The flexible snaps 31 are provided on the cap-shapedportion 35, and their upper end forms an inclined surface for the firstsnaps to be pressed down and flexibly compress the flexible snapsbackward. An inner side of the cap-shaped portion 35 is provided withfour protruded second snaps 351 distributed at intervals in an annulararray and snap-fitted to a lower end surface of the snapping edge 211such that the external snapping head is snap-fitted to the bottle mouth.Additionally, the top end of the external snapping head 3 is providedwith arc-shaped holes 352 running through in an up and down direction atpositions corresponding to the four second snaps 351, in order tofacilitate the detachment of the external snapping head. When detaching,a matching tool (such as a flat-blade screwdriver, etc.) is inserteddownward through the arc-shaped hole 352 to the second snap 351, andthen pried outward to separate it from the snapping edge 211.

Specifically, a positioning protrusion 212 projecting radially outwardsfrom the snapping edge 211 is provided on the outer periphery of thebottle mouth of the liquid storage bottle to prevent the externalsnapping head from rotating by itself, and the positioning protrusion212 is located on or below the snapping edge. A lower end of thecap-shaped portion 35 is provided with a U-shaped bayonet 353 for thepositioning protrusion 212 to fit in, therefore the liquid storagebottle and the external snapping head are fixed with each other.

In other embodiments of the present application, as shown in FIGS. 10-12, the assembly structure of the hand wash liquid soap dispenser furtherincludes a bottle cap 4 covered onto the outer periphery of the externalsnapping head for sealing, and a rubber plug 5 disposed in thepositioning recess 33 for sealing the recessed hole and the airaperture. Two protruded rotation stoppers 41 for corresponding flexiblesnaps to screw in are symmetrically provided on an inner side of thebottle cap 4, and a receiving groove 42 for receiving the flexible snapis provided laterally in the rotation stoppers 41. One side of thereceiving groove 42 is an opening through which the flexible snap isscrewed in, and a protruded arc-shaped limiter 43 is provided at theopening. The arc-shaped limiter can limit the position of the flexiblesnap after it enters the receiving groove of the rotation stopper, ascertain amount of force is required for the flexible snap to be screwedin and out, thereby preventing the bottle cap from being easilyunscrewed in the reverse direction. A lower end of the rotation stopper41 on a side corresponding to the opening is provided with an outwardlyinclining guiding inclined edge 44 which guides the flexible snap to beaccurately screwed into the receiving groove. The other side of thereceiving groove 42 has a rib 45 for stopping the flexible snap to avoidan excess amount of rotation during the process of screwing in andachieve tight fitting. A supporting post 46 extending downwardly intothe positioning recess is also provided at the center of the inner sideof the bottle cap. A lower end of the rubber plug 5 is provided with twoplug pillars 51 which are inserted into the recessed hole and the airaperture respectively. In the above, the bottle cap and the rubber plugare provided such that during the transportation or storage of theliquid storage bottle alone, in order to ensure the sealing of theliquid storage bottle, the recessed hole and the air aperture are firstplugged through the rubber plug then the bottle cap is closed, and thebottle cap and the rubber plug can be removed when the main body casingis to be mounted on the liquid storage bottle.

In other embodiments of the present application, a complete hand washliquid soap generator can be obtained by arranging correspondingnozzles, foam generating devices, liquid pumps, and gas pumps as drivingmechanisms in the main body casing. Specifically, the nozzle is arrangedon an upper part of the main body casing, and facing toward the outsideof the main body casing to spray the foam. The foam generating device isarranged inside the main body casing, and includes: a gas-liquid mixingchamber in communication with the nozzle, a liquid pump in communicationwith the suction nozzle at the lower end of the main body casing througha tube and used for sucking the hand wash liquid soap from the suctionnozzle and pump it into the gas-liquid mixing chamber, a gas pump forsucking air and pump it into the gas-liquid mixing chamber, a drivingmechanism for driving the liquid pump and the gas pump, and a sensingdevice arranged on the main body casing and electrically connected tothe driving mechanism. The sensing device is used to detect theapproaching human body, and generate a starting signal that controls thedriving mechanism to drive the liquid pump and the gas pump after anapproaching human body is detected, so that the air pumped into thegas-liquid mixing chamber is mixed with the hand wash liquid soap in thegas-liquid mixing chamber to generate foam, and the foam generated issprayed through the nozzle.

Embodiment 2

As shown in FIGS. 4-12 , a liquid storage bottle of the presentembodiment includes a bottle body 20, an external snapping head 3snapped to a bottle mouth 21 of the bottle body 20, and a bottle cap 4covered onto an outer periphery of the external snapping head 3. Anouter periphery of an upper end of the external snapping head 3 isprovided with two flexible snaps 31 that are protruded and symmetricallyarranged, and two protruded rotation stoppers 41 for the two flexiblesnaps to be correspondingly screwed into are provided on an inner sideof the bottle cap 4. A receiving groove 42 for receiving the flexiblesnap is provided laterally in the rotation stoppers 41. One side of thereceiving groove 42 is an opening through which the flexible snap isscrewed in, and a protruded arc-shaped limiter 43 is provided at theopening. The arc-shaped limiter can limit the position of the flexiblesnap after it enters the receiving groove of the rotation stopper, ascertain amount of force is required for the flexible snap to be screwedin and out, thereby preventing the bottle cap from being easilyunscrewed in the reverse direction. A lower end of the rotation stopper41 on a side corresponding to the opening is provided with an outwardlyinclining guiding inclined edge 44 which guides the flexible snap to beaccurately screwed into the receiving groove. The other side of thereceiving groove 42 has a rib 45 for stopping the flexible snap to avoidan excess amount of rotation during the process of screwing in andachieve tight fitting. During the transportation or storage of theliquid storage bottle alone, the bottle cap is closed in order to ensurethe sealing of the liquid storage bottle, and the bottle cap can beremoved and the external snapping head is snap-fitted to the main bodycasing of the hand wash liquid soap dispenser when the liquid storagebottle is to be mounted on the hand wash liquid soap dispenser.

Specifically, a recessed hole 32 for a suction nozzle 13 to be insertedin and sealed is provided on the external snapping head 3. Athrough-hole 321 communicating with an inside of the liquid storagebottle 2 is provided on a bottom part of the recessed hole 32. Apositioning recess 33 which is recessed downward into the bottle mouthof the liquid storage bottle is provided in a central part of a top endof the external snapping head 3, and the recessed hole 32 is located onone side of a bottom part of the positioning recess 33. Two verticalguiding columns 331 that are protruded are provided on an inner wall ofthe positioning recess 33 and are symmetrically located at two sides ofthe recessed hole 32. An air aperture 34 in communication with theinside of the bottle body 20 is provided on the bottom part of thepositioning recess 33. Gas flows into the bottle through the airaperture when drawing liquid out of the bottle. The air aperture 34 isprovided at one side of the recessed hole 32. A supporting post 46extending downwardly into the positioning recess is also provided at thecenter of the inner side of the bottle cap. A rubber plug 5 is disposedin the positioning recess 33 for sealing the recessed hole and the airaperture, through two plug pillars 51 provided at a lower end of therubber plug 5 which are inserted into the recessed hole and the airaperture respectively, and the plug pillars are in interference fit withthe recessed hole and the air aperture to achieve sealing.

In the present embodiment, a snapping edge 211 protruding in a radialdirection is provided on an outer side of an upper end of the bottlemouth 21 of the bottle body 20. A cap-shaped portion 35 is formed on theouter periphery of the upper end of the external snapping head 3, whichis sleeved on an outer periphery of the bottle mouth 21. An inner sideof the cap-shaped portion 35 is provided with four protruded secondsnaps 351 distributed at intervals in an annular array and snap-fittedto a lower end surface of the snapping edge 211 such that the externalsnapping head is snap-fitted to the bottle mouth. Additionally, the topend of the external snapping head 3 is provided with arc-shaped holes352 running through in an up and down direction at positionscorresponding to the second snaps 351, in order to facilitate thedetachment of the external snapping head. When detaching, a matchingtool (such as a flat-blade screwdriver, etc.) is inserted downwardthrough the arc-shaped hole 352 to the second snap 351, and then priedoutward to separate it from the snapping edge 211.

Specifically, a positioning protrusion 212 projecting radially outwardsfrom the snapping edge 211 is provided on the outer periphery of thebottle mouth of the liquid storage bottle to prevent the externalsnapping head from rotating by itself, and the positioning protrusion212 is located on or below the snapping edge. A lower end of thecap-shaped portion 35 is provided with a U-shaped bayonet 353 for thepositioning protrusion 212 to fit in, therefore the bottle body and theexternal snapping head are fixed with each other.

The technical proposals provided by the embodiments of the presentapplication have been described in detail above, and specific exampleshave been applied herein to discuss the principles and implementationmodes of the embodiments of the present application. The descriptions ofthe above embodiments are only applicable to aid in understanding theprinciples of the embodiments of the present application. Meanwhile,those of ordinary skill in the art, according to embodiments of thepresent invention, may make modifications in the specific embodimentsand application scope, and the content of this specification shall notbe construed as limiting the present application.

What is claimed is:
 1. An assembly structure of a hand wash liquid soapdispenser comprising: a main body casing; and a liquid storage bottle,wherein the assembly structure of the hand wash liquid soap dispenserfurther comprises an external snapping head snap-fitted on a bottlemouth of the liquid storage bottle, a plurality of protruded flexiblesnaps are provided at intervals on an outer periphery of an upper end ofthe external snapping head, a recessed groove engaged with the outerperiphery of the external snapping head is provided on a bottom part ofthe main body casing, and a plurality of first snaps or snap groovescorresponding to the flexible snaps are provided on an inner wall of therecessed groove, a suction nozzle extending downward and protrudingbeyond the recessed groove is disposed on one side of the recessedgroove, and a recessed hole for the suction nozzle to be inserted in andsealed is provided on the external snapping head, a through-holecommunicating with an inside of the liquid storage bottle is provided ona bottom part of the recessed hole.
 2. The assembly structure of a handwash liquid soap dispenser according to claim 1, wherein a positioningrecess is provided in a central part of a top end of the externalsnapping head, and a boss which extends downward and is to be insertedinto the positioning recess is provided in a central part of therecessed groove, and the suction nozzle is disposed on one side of theboss and is protruded downward and beyond a lower end of the boss, therecessed hole is located on one side of a bottom part of the positioningrecess.
 3. The assembly structure of a hand wash liquid soap dispenseraccording to claim 2, wherein two vertical guiding columns are providedon an inner wall of the positioning recess and respectively located attwo sides of the recessed hole, one side of the boss is recessed andformed with guiding grooves which cooperate with the guiding columns,and the suction nozzle is located in a middle of the guiding grooves. 4.The assembly structure of a hand wash liquid soap dispenser according toclaim 3, wherein an air aperture in communication with the inside of theliquid storage bottle is provided at one side of the recessed hole onthe bottom part of the positioning recess, outer sides of the twoguiding columns are respectively in abutment with both sides of theguiding grooves, an air flow channel connecting external air and the airaperture is provided between the guiding columns and the suction nozzle.5. The assembly structure of a hand wash liquid soap dispenser accordingto claim 4, wherein a snapping edge protruding in a radial direction isprovided on an outer side of an upper end of the bottle mouth of theliquid storage bottle, a cap-shaped portion sleeved on an outerperiphery of the bottle mouth of the liquid storage bottle is formed onthe outer periphery of the upper end of the external snapping head, andan inner side of the cap-shaped portion is provided with a plurality ofprotruded second snaps distributed at intervals in an annular array andsnap-fitted to a lower end surface of the snapping edge.
 6. The assemblystructure of a hand wash liquid soap dispenser according to claim 5,wherein the top end of the external snapping head is provided witharc-shaped holes running through in an up and down direction atpositions corresponding to the second snaps.
 7. The assembly structureof a hand wash liquid soap dispenser according to claim 6, wherein atleast one positioning protrusion projecting radially outwards from thesnapping edge is provided on the outer periphery of the bottle mouth ofthe liquid storage bottle, and a U-shaped bayonet for the positioningprotrusion to fit in is provided on a lower end of the cap-shapedportion.
 8. The assembly structure of a hand wash liquid soap dispenseraccording to claim 7, further comprising a bottle cap that is covered onthe outer periphery of the external snapping head for sealing; and arubber plug disposed in the positioning recess for sealing the recessedhole and the air aperture, a plurality of protruded rotation stoppersfor screwing the flexible snaps in are provided on an inner side of thebottle cap, and a receiving groove for receiving the flexible snap isprovided in the rotation stopper, one side of the receiving groove is anopening into which the flexible snap is screwed, and a protrudedarc-shaped limiter is provided at the opening, a lower end of therotation stopper on a side corresponding to the opening is provided withan outwardly inclining guiding inclined edge, and another side of thereceiving groove has a rib for stopping the flexible snap, a lower endof the rubber plug is provided with two plug pillars which are protrudedand inserted into the recessed hole and the air aperture respectively.9. A liquid storage bottle, comprising: a bottle body; an externalsnapping head snapped to a bottle mouth of the bottle body; and a bottlecap covered onto an outer periphery of the external snapping head,wherein a plurality of protruded flexible snaps are provided atintervals on an outer periphery of an upper end of the external snappinghead, and a plurality of protruded rotation stoppers for screwing theflexible snaps in are provided on an inner side of the bottle cap, apositioning recess is provided in a central part of a top end of theexternal snapping head, and one side of the positioning recess isprovided with a recessed hole and an air aperture that communicate withan inside and an outside of the bottle body, the positioning recess isalso provided with a rubber plug for sealing the recessed hole and theair aperture.
 10. The liquid storage bottle according to claim 9,wherein a receiving groove for receiving the flexible snap is providedin the rotation stopper, one side of the receiving groove is an openinginto which the flexible snap is screwed, and a protruded arc-shapedlimiter is provided at the opening, a lower end of the rotation stopperon a side corresponding to the opening is provided with an outwardlyinclining guiding inclined edge, and another side of the receivinggroove has a rib for stopping the flexible snap, a lower end of therubber plug is provided with two plug pillars which are inserted intothe recessed hole and the air aperture respectively.